#VU100169 Use-after-free in Linux kernel - CVE-2024-50261

Vulnerability identifier: #VU100169

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-50261

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the macsec_free_netdev() function in drivers/net/macsec.c. A local user can escalate privileges on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
http://git.kernel.org/stable/c/872932cf75cf859804370a265dd58118129386fa
http://git.kernel.org/stable/c/9f5ae743dbe9a2458540a7d35fff0f990df025cf
http://git.kernel.org/stable/c/4614640f1d5c93c22272117dc256e9940ccac8e8
http://git.kernel.org/stable/c/f1e54d11b210b53d418ff1476c6b58a2f434dfc0

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.